Blue-winged Teal (Anas discors; BWTE) are the
second most abundant duck (family Anatidae)
species in North America and are widely distributed
(Rowher et al. 2002). Its breeding range stretches from the southern high-plains of New Mexico
and Texas...

This is a status assessment of the double-crested cormorant in North America as of 2001. It includes general information on the bird, biological information and area-specific population information for throughout North America.

This is a status assessment and conservation plan for the Cassin's Sparrow. It includes a description and natural history of the bird, as well as range information pertinent to breeding, migration and wintering, monitoring activities, population...

In North America the process of establishing hunting regulations for waterfowl is conducted annually. In the United States the process involves a number of scheduled meetings in which information regarding the status of waterfowl is presented to...

On 12-13 April 1988 a workshop on the analysis of avian population trends was held at the Patuxent Wildlife Research Center in Laurel, Maryland. The workshop was cosponsored by the Branch of Migratory Bird Research of the Patuxent Wildlife...